Black 1 forms a 'sangen biraki' shape.
It's called 'sangen biraki' since there are three empty spaces between black's stones.
Black's group has a weakness at "A".
Circumstances will determine whether white will ever invade.

Chinese

san1 jian4 chai1

English

three point extension

Japanese

niken biraki

White 1 just attacked black's marked stone.
With black 2 ('niken biraki') black gives this group some eye space.
It's called 'niken biraki' since there are two empty spaces between black's stones.

Chinese

chai1 er4

English

two point extension

Japanese

narabi

Black 1 ('narabi') is a rarely played 'taisha joseki' continuation.
The idea behind black 1 is that it makes "A" and "B" 'miai'.

Chinese

chai1

English

an extension from a single stone

Japanese

hana zuke

Chinese

ding3

English

playing on top of an enemy chain

Japanese

hai

Chinese

pa2

English

crawl

Japanese

biraki
hiraki

White [a]-[f] are all biraki/hiraki of the white stone
A sensible choice between these moves
will be affected by the right side situation

Chinese

chai1

English

extension

Japanese

bane
hane

We are in the middle of a 'komoku joseki' (black to move)
Black can raise his low position by playing at 1 ('hane')

Chinese

ban1

English

a move on top of an enemy chain

Proverbs

Hane? Extend! Make it a habit.

There is death in the hane.

At the head of two stones in a row, play hane.

At the head of three stones in a row, play hane.

Japanese

ryo atari

Chinese

shuang1 da3, shuang1 jiao4 chi1

English

double 'atari', a move which places two (or more) enemy chains in check

Japanese

nigiri

Chinese

chai1 xian1

English

draw the colors of the players before the game

Japanese

hiraki zume

White 1 is 'hirake zume', both an extension of the white
position on the left and an opposition of the marked black stone.

Chinese

chai1 bi1

English

extension + opposition

Japanese

guru guru mawashi

What will happen after white "A"?
Continuation: see 'dango'.
Final result: see 'shicho'.

Chinese

lian2 huan2 zheng1 zi3

Korean

dol-dol mal-ri-da

English

capturing an enemy chain using the following combination of techniques:
1. stone sacrifice(s)
2. squeeze
3. ladder
during this chasing process the enemy chain typically gets heavy in
the process.

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